package servlet;

import pojo.Dept;
import service.DeptService;
import service.impl.DeptServiceImpl;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.util.List;


// 注解
@WebServlet(urlPatterns = "/dept")
public class DeptServlet extends HttpServlet {

    @Override
    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        doPost(req, resp);
    }

    @Override
    protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        DeptService deptService = new DeptServiceImpl();
        req.setCharacterEncoding("utf-8");
        String action =req.getParameter("action");
        if("list".equals(action)){
            String name = req.getParameter("name");
            String pass = req.getParameter("pass");

            Dept condition = new Dept(name, pass);

            List<Dept> users = deptService.findAll(condition);

            req.setAttribute("users", users);
            req.setAttribute("condition", condition);
            req.getRequestDispatcher("/list.jsp").forward(req, resp);

        }else if("add".equals(action)){
            String name = req.getParameter("name");
            String pass = req.getParameter("pass");

            int result = deptService.addUser(new Dept(name,pass));
            if (result > 0) {
                // 重定向
                resp.sendRedirect("user?action=list");
            }

        }else if("delete".equals(action)){
            String sid = req.getParameter("id");
            Integer id = Integer.parseInt(sid);
            Dept user = deptService.findUserById(id);

            // 把数据放到请求域中
            req.setAttribute("user", user);
            // 在哪个页面显示数据
            req.getRequestDispatcher("/update.jsp").forward(req, resp);

        } else if ("update".equals(action)) {


            // 获取参数
            String sid = req.getParameter("id");
            int id = Integer.parseInt(sid);
            String name = req.getParameter("name");
            String pass = req.getParameter("pass");
            int result = deptService.updateUser(new Dept(id, name, pass));
            if (result > 0) {
                // 使用重定向
                resp.sendRedirect("user?action=list");
            }
        }
    }
}




